Duomitus is a monotypic moth genus in the family Cossidae described by Arthur Gardiner Butler in 1880.

Its only species, Duomitus ceramicus, described by Francis Walker in 1865, is found in Yunnan in China and from southern India and Malaysia to Sumatra, Ceram and New Guinea.

Antennae of male with proximal half bipectinate (comb like on both sides), the distal half is simple, wholly simple in female.

The fork of the veinlets in the cell of both wings are broad.

This article relating to the moth subfamily Zeuzerinae is a stub.